exam Maths Puzzle Numerical Ability

Please help with (((6y-3y+2=-16)))

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exam Other Question

I was able to use the quadratic calculator for some of the problems, but this one I do not think I can:
Solve by using the quadratic formula:
x^2 = 5x - 5

Please help! Thank you
Graph each of the following equations, using the intercept method. See Example 7 (p 534) in the text for reference.
28) 2x + 3y = 6